Oil-engine-driven centrifugal and similar pump



L ezzss Mreh 29, 1927 FRP.l BOURNE OIL ENGINE DRIVEN CENTRIFUGAL AND SIMILAR PUM 2. Shee-ts-She l VFlecl Nov. 13, 1923 l 1,622,699 March 29a 1927 P p BOQRNE v OIL ENGINE' DRIVEN CENTRIFUGL'-ANDSIMILAR PUMP Filed Nov. 15. 1923 2 Shee'CS--Shel 2 i 35 erl Patented Mar. 29, 1927.

UNITI-:o ASTATES PATENT oFFmE'..i y

PHILLIPS '.P. BOUBNE, `OF WINCHESTER, MASSACHUSETTS, vASSIGN-OR T0 'WORTHING- TON :PUMP & MACHINERY CORPORATION, l"l NEW YORK, N. Y., A CORPORATION or VIRGINIA.

OIL-ENGTNE-Dnrvnn onn'rmruear. AND SIMILAR' Pour.

application mea mvember 13, 192s. .semi No. 674,437. A

This invention relates to the control j of internal combustion` engines and especially to an improved control for. internal combustion engmes driving centrifugal pumps or the like and-is especially adapted for such use in installations drawing water from;

rivers or the like where there is or vmay be a considerable variation in the water level.

' -This condition prevails 'to a great extent in irrigation installations where a decrease 'in the suction head results in the pump delivering a larger quantity of water with consequent overloading of the pump and increase of the fuel supply to the en ine which 15 may produce bad combustion an result in' a breakdown or stoppage of the engine, and, in any case, involves increased cost of operation` without any resulting advantage, as anyexcess ofwater delivered above what is necessary for irrigation is wasted. The

most economical and efficient pump operation of an irri ating system is that which delivers auniirm quantity of water ir,- respective of supply level, with the minimum fuel consumption. A A

l It is an objectI of this inventiontc4 provide animproved control for the 4internal combustion engine of a centrifugal or similar non-displacement pump, which will 130 y maintain a uniform pump capacity at a minimum fuel'consumption, regardless of the variation in pump lift, and provide an adjustably fixed limit of the fuel to that amount which can be effectively and propburned therein.

further object is to provide a simple and eliicient control of general application in internal combustion engines combining a speed responsive control -of the fuel with` a second 40 adjustable control providing 'an adjustably fixed limit for the maximum amount of fuel to be delivered to theengine cylinders and operating to render the speed responsive control inoperative except for quantities of fuel less than the kadjustably iixed maximum quantity. i

-For a a construction embodying Avall the features thereof in their preferred form will now be described in connection with the accompany-I ing drawings forming a part of this specifi-4 full understanding of .the invention cation and the features forming the invention then specifically pointed out inv-the claims.

In the drawingsf Figure 1 is a side elevation of an internal combustion engine driveneentrifugal pump uint; f

Figure 2 is a Figure 4 is a section on line 4--4 of 2,an, Figure 5 is a section on line 5-5 of Fig. 4. Referring to the drawings,.th'e centrifugal pump A ma be directly connected to the internal com ustion .engine B by a suitable I section through the internal i .combustionl engine control box, v

Figure 3 is a section on line 3--3 of 2,

flexible coupling C to form aunit therewith andthe voperation of the internal combustion engine B .1s controlled by mechanism mounted with-in a control box D mounted at 'one' end thereof, andon` which is mounted p `the fuel pump body E with a plurality of fuel.v pumps, one for each cylinder of the en ine. f c

s shown Iin Fig. 3, each fuel pump is provided with the usual pumpplunger 7 and suction and .discharge passages l, 2, controlled respectively by suction valve 3 and discharge valve 4. `The suction passage l connects with a fuel supply c amber 5, common to all the'pumps, and the discharge passage 2 connects with one of the engine cyl- 1n plunger 7` is actuated in any lsuitable manner,

as by tappet 8 moved by engagement with the roller 9 of a strap' eccentric 10 mounted on the engine crank shaft 11 which extends within the control box D. The pump has a variable delivery which'is of the suction bypass type'in which the suction valve 3 is n held open during a varying time inthe latter portion of thev stroke of the plunger 7 by ers through the piping 6. The pump` means of a by-pass plunger 12 moved by bypass tappet lat the proper time. The lbypass tappet 13 is moved by the ,movement of plunger tappet 8 through a by-pass lever 14 'pivoted' at one end to the plunger tappet 8 and having its opposite endl resting upon an eccentric fuel control shaft 15 adjustable under'` the control of a speed responsive device to determine the time and period of opening of the suction valve 3 for by-passing the fuel.

, This speed responsive device comprises a governor base 16 secured to the engine crank shaft 11 and mounting pivotally weights 17 which have arms bearing against the face of a sleeve 18, axially movable on the crank shaft 11 and provided with shrouds 19 Abetween which the forked ends 201of a bifurcated lever 21 extend. The bifurcated lever 21 is secured to and supported by a shaft 22 to which is also secured a governor arm 23 connecting with the lower end of an adjust- .able link 24 preferably by a sliding ljoint formed by providing a passage throughthe governor arm 23 through which the adjustable link passes freely, a head 25 on the end ofthe link 24 coacting With the governor arm 23 for movement of the link 24 down- Ward. The upper end of the adjustable -linkthe other to an eye 33 carried by a pin 30 holds thehead 25 of the adjustable link 24 in engagement with the end of the governor arm 23.A

For adjustably fixing the maximum fuel l limit I provide the hub 27 with a peripheral recess 34 forming a shoulder 35 -coacting with a pin36 carried by a` hand lever 37 loosely mounted upon the eccentric fuel control shaft 15, preferably between the hub 27 and the control box D. The hand lever 37 is provided with a handle 38 for movement thereof and with a bolt 39 which passes through an arcuately slotted plate 40 se cured to the control box D by bolts 41, a suitable thumbscrew 42 being provided on the bolt 39 outside the plate 40 for securing the hand lever 37 in the desired position.

The operation is as.,follows: As the engine vspeeds up the governor weights 17 move outward .drawing lever 26 downward against the action of spring 32 through parts 23 and 24 to rotate the eccentric fuel control shaft 15 suitably and raise the outer end of the by-pass lever 14 whereby the movement of the plunger tappet 8 causes the suction valve 3 to be opened earlier in the pump plunger stroke, securing the desired decrease in the fuel supply to the engine. In this operation the shoulder 35 of hub 27 moves away from the pin 36 carried by hand lever 37. A decrease in the engine speed results in an inward movement of the governor Weights 17 which allows the spring 32 lto movethe fuel con trol'shaft 15 in the opposite direction, thus lowerin the outer end of the by-pass'lever 14 pro ucing a later opening of suction valve 3 for by-passing and thus increasing thev supply of fuel tov the engine c linders. ln this movement the quantity of fuel supplied is dependent not only on the governor but also on the position of the pin 36 and the engagement therewith of shoulder 35 carried by hub 27. Through handle 38 and hand lever 37 the pin 36 may be set at any position Within the limits of the arcuately slotted plate 40 to determine the maximum quantity of fuel which may be delivered by 'the fuel pumps,the governor operating to -control the fuel delivery for quantities less than lthe adjustable fixed maximum, but inoperable to increase the fuel feed above this maximum quantity as determined by tle engagement of shoulder 35 4with the pin, 3

A further advanta e,of this construction resides in the fact t at it may readily be attached to any 'engine control box.

It Will readily be understood that the invention is not to be limited to the s ecic form shown, as many modifications t ereof may be made within the invention as defined by the claims.

What is claimed is:l

1. A fuel feeding device for internal combustion engines comprising a fuel pump, a fuel b'y-pass valve, means for operating the fuel by-pass valve including a fuel control shaft determining the point and duration of the opening of said fuel by-pass valve, a governor connected to the fuel control shaft, and an'adjustable stop coacting with the fuel control shaft to provide an adjustably fixed maximum fuel limit to the fuel increasing movement of the fuel control shaft.

2. A fuel feeding device for internal combustion engines comprising a fuel pump, a fuel by-pass valve, means for operating the fuel'by-pass valve including a fuel control shaft determining the point and duration of the opening of said fuel by-pass valve, a

governor connected to the fuel control shaft, a hand lever mounted on the fuel control shaft and free to rotate thereon, a shoulder on the fuel control shaft, a pin carried by the hand lever and coacting with said shoulder to provide an adjustably fixed.

maximum fuel limit to the fuel increasin movement of the fuel control shaft` an means for securing the hand leverin adjusted position.

3. A fuel feeding device for internal combustion engines comprising a' fuel pump, a fuel by-pass valve, means for 'operating the fuel by-pass valve including an eccentric fuel control shaft determining the `point and duration of the opening of said fuel by-pass valve, a governor connected to the eccentric fuel control shaft, a. hand lever mounted on limit to the fuel increasing movement of the 'the Veccentric fuel control shaft and free to4 ec'centric fuel control shaft, and means for rotate thereon, a peripheral recess in the securing the hand lever in' adjusted position, 10 eccentric` fuel control shaft providing a In testimony whereof, I have hereunto Set 5 shoulder thereon, a pin carried b the hand my hand.

lever and coacting with said s oulder to provide en adjustably fixed maximum fuel PHILLIPS P. BOURNE. 

